1 // SPDX-License-Identifier: GPL-2.0+
4  * Luigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com>
11  * This provides a bit-banged interface to the ethernet MII management
115 		BB_MII_RELOCATE(bb_miiphy_buses[i].init, gd->reloc_off);  in bb_miiphy_init()
116 		BB_MII_RELOCATE(bb_miiphy_buses[i].mdio_active, gd->reloc_off);  in bb_miiphy_init()
117 		BB_MII_RELOCATE(bb_miiphy_buses[i].mdio_tristate, gd->reloc_off);  in bb_miiphy_init()
118 		BB_MII_RELOCATE(bb_miiphy_buses[i].set_mdio, gd->reloc_off);  in bb_miiphy_init()
119 		BB_MII_RELOCATE(bb_miiphy_buses[i].get_mdio, gd->reloc_off);  in bb_miiphy_init()
120 		BB_MII_RELOCATE(bb_miiphy_buses[i].set_mdc, gd->reloc_off);  in bb_miiphy_init()
121 		BB_MII_RELOCATE(bb_miiphy_buses[i].delay, gd->reloc_off);  in bb_miiphy_init()
165 	bus->mdio_active(bus);  in miiphy_pre()
166 	bus->set_mdio(bus, 1);  in miiphy_pre()
168 		bus->set_mdc(bus, 0);  in miiphy_pre()
169 		bus->delay(bus);  in miiphy_pre()
170 		bus->set_mdc(bus, 1);  in miiphy_pre()
171 		bus->delay(bus);  in miiphy_pre()
175 	bus->set_mdc(bus, 0);  in miiphy_pre()
176 	bus->set_mdio(bus, 0);  in miiphy_pre()
177 	bus->delay(bus);  in miiphy_pre()
178 	bus->set_mdc(bus, 1);  in miiphy_pre()
179 	bus->delay(bus);  in miiphy_pre()
180 	bus->set_mdc(bus, 0);  in miiphy_pre()
181 	bus->set_mdio(bus, 1);  in miiphy_pre()
182 	bus->delay(bus);  in miiphy_pre()
183 	bus->set_mdc(bus, 1);  in miiphy_pre()
184 	bus->delay(bus);  in miiphy_pre()
185 	bus->set_mdc(bus, 0);  in miiphy_pre()
186 	bus->set_mdio(bus, read);  in miiphy_pre()
187 	bus->delay(bus);  in miiphy_pre()
188 	bus->set_mdc(bus, 1);  in miiphy_pre()
189 	bus->delay(bus);  in miiphy_pre()
190 	bus->set_mdc(bus, 0);  in miiphy_pre()
191 	bus->set_mdio(bus, !read);  in miiphy_pre()
192 	bus->delay(bus);  in miiphy_pre()
193 	bus->set_mdc(bus, 1);  in miiphy_pre()
194 	bus->delay(bus);  in miiphy_pre()
198 		bus->set_mdc(bus, 0);  in miiphy_pre()
200 			bus->set_mdio(bus, 0);  in miiphy_pre()
202 			bus->set_mdio(bus, 1);  in miiphy_pre()
204 		bus->delay(bus);  in miiphy_pre()
205 		bus->set_mdc(bus, 1);  in miiphy_pre()
206 		bus->delay(bus);  in miiphy_pre()
212 		bus->set_mdc(bus, 0);  in miiphy_pre()
214 			bus->set_mdio(bus, 0);  in miiphy_pre()
216 			bus->set_mdio(bus, 1);  in miiphy_pre()
218 		bus->delay(bus);  in miiphy_pre()
219 		bus->set_mdc(bus, 1);  in miiphy_pre()
220 		bus->delay(bus);  in miiphy_pre()
239 	bus = bb_miiphy_getbus(miidev->name);  in bb_miiphy_read()
241 		return -1;  in bb_miiphy_read()
246 	/* tri-state our MDIO I/O pin so we can read */  in bb_miiphy_read()
247 	bus->set_mdc(bus, 0);  in bb_miiphy_read()
248 	bus->mdio_tristate(bus);  in bb_miiphy_read()
249 	bus->delay(bus);  in bb_miiphy_read()
250 	bus->set_mdc(bus, 1);  in bb_miiphy_read()
251 	bus->delay(bus);  in bb_miiphy_read()
254 	bus->get_mdio(bus, &v);  in bb_miiphy_read()
258 			bus->set_mdc(bus, 0);  in bb_miiphy_read()
259 			bus->delay(bus);  in bb_miiphy_read()
260 			bus->set_mdc(bus, 1);  in bb_miiphy_read()
261 			bus->delay(bus);  in bb_miiphy_read()
264 		return -1;  in bb_miiphy_read()
267 	bus->set_mdc(bus, 0);  in bb_miiphy_read()
268 	bus->delay(bus);  in bb_miiphy_read()
273 		bus->set_mdc(bus, 1);  in bb_miiphy_read()
274 		bus->delay(bus);  in bb_miiphy_read()
276 		bus->get_mdio(bus, &v);  in bb_miiphy_read()
278 		bus->set_mdc(bus, 0);  in bb_miiphy_read()
279 		bus->delay(bus);  in bb_miiphy_read()
282 	bus->set_mdc(bus, 1);  in bb_miiphy_read()
283 	bus->delay(bus);  in bb_miiphy_read()
284 	bus->set_mdc(bus, 0);  in bb_miiphy_read()
285 	bus->delay(bus);  in bb_miiphy_read()
286 	bus->set_mdc(bus, 1);  in bb_miiphy_read()
287 	bus->delay(bus);  in bb_miiphy_read()
310 	bus = bb_miiphy_getbus(miidev->name);  in bb_miiphy_write()
313 		return -1;  in bb_miiphy_write()
319 	bus->set_mdc(bus, 0);  in bb_miiphy_write()
320 	bus->set_mdio(bus, 1);  in bb_miiphy_write()
321 	bus->delay(bus);  in bb_miiphy_write()
322 	bus->set_mdc(bus, 1);  in bb_miiphy_write()
323 	bus->delay(bus);  in bb_miiphy_write()
324 	bus->set_mdc(bus, 0);  in bb_miiphy_write()
325 	bus->set_mdio(bus, 0);  in bb_miiphy_write()
326 	bus->delay(bus);  in bb_miiphy_write()
327 	bus->set_mdc(bus, 1);  in bb_miiphy_write()
328 	bus->delay(bus);  in bb_miiphy_write()
332 		bus->set_mdc(bus, 0);  in bb_miiphy_write()
334 			bus->set_mdio(bus, 0);  in bb_miiphy_write()
336 			bus->set_mdio(bus, 1);  in bb_miiphy_write()
338 		bus->delay(bus);  in bb_miiphy_write()
339 		bus->set_mdc(bus, 1);  in bb_miiphy_write()
340 		bus->delay(bus);  in bb_miiphy_write()
345 	 * Tri-state the MDIO line.  in bb_miiphy_write()
347 	bus->mdio_tristate(bus);  in bb_miiphy_write()
348 	bus->set_mdc(bus, 0);  in bb_miiphy_write()
349 	bus->delay(bus);  in bb_miiphy_write()
350 	bus->set_mdc(bus, 1);  in bb_miiphy_write()
351 	bus->delay(bus);  in bb_miiphy_write()